Titanium Dual LNB Problems :(

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Larry1

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Aug 24, 2005
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Port Hope, ON Canada
Just to be clear.....


With only one set top box, connect to port one, result?
Now disconnect this set top box and connect to port two, result?

Now, disconnect this set top box and use only the second set top box
Connect to one port, result?
Now disconnect this set top box and connect to port two, result?

(this is to verify the operation of each set top box independently)

Now if this works, when both set top boxes are connected, is there any difference if changing which one connects to the LNBF port one and two?

Are both set top boxes tuned to receive the same channel? (and therefore the same polarity which in turn means the same voltage out)

Now if both set top boxes are receiving different polarity channels? i.e. H/V

Now the reverse? V/H

note V=vertical channel
H=horizontal channel

These tests should help in narrowing it down and clear up any interpretation of previous posts.


IMPORTANT!!! make sure both set top boxes are unplugged when changing any connections!!!
 

IntelPennny4

Thread Starter
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Oct 28, 2016
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i have done what you have said. port one works on both stb. port 2 does not work at all no signal at all. with both hooked only port one works. i have took the lnbf apart and no water and sealed it back shut. port one H and V work great on both STB. port two nothing at all dead to the world.
 

wvman

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Sep 19, 2014
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i have done what you have said. port one works on both stb. port 2 does not work at all no signal at all. with both hooked only port one works. i have took the lnbf apart and no water and sealed it back shut. port one H and V work great on both STB. port two nothing at all dead to the world.
Just curious. Did you check the solder joint on the dead port where the connector solders to the main board? I've seen solder joints that looked just fine that somehow lost connection to the board. If the connection was in question, I usually soldered over the old joint just to be sure. It's something to consider. :)
 

Titanium

AI6US
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Were you able to perform the testing and comment as was mentioned in post #2? Titanium Reply #2
I suspect that there is an interaction between the two feedlines which caused the initial erratic performance and the subsequent failure.

You may send the unit in for testing and if it has failed under warranty, we will replace.
 

IntelPennny4

Thread Starter
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Oct 28, 2016
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i have done the testing and took some pictures. looks like the lnbf has failed the test i have done aka told to do. in the third picture the little wire is broken on one end aka has came off the board or whatever its solder too. i know its very hard to see in the picture im sorry
 

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Titanium

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The damage you describe mirrors the results of interaction between two circuits (power flowing where it shouldn't be). Please comment on these testing results. Are you observing any voltages? If so, AC? DC? Voltage?

Are the two STBs located in different rooms or in the same room? If different rooms, test for power line interaction by running a temporary AC extension cord to power the STB, TV (and other connected AV devices).

With the STBs connected as they are currently, check for potential voltages tested between the two coax cables (braid to braid, braid to center conductor and opposite braid to opposite center conductor) when disconnected from the LNBF and connected only to the STBs. Repeat the test with all AV devices connected.
 

IntelPennny4

Thread Starter
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Oct 28, 2016
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yes i monitor the ac with meter which stays the same all the time ac 112V about 3 amps and dc V is 13.5v and H is 18.5v. i dont know about amps on those
 

Titanium

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That is not what needs to be tested.

1. Do you have two STBs located in different rooms? If so, repeat this test with the STBs/TVs/Audio/ ETC. plugged into the wall outlets as the currently are, then all powered from the same power outlet via an extension cord.

2. Check for voltages between the two coax cables at the LNBF with the other ends connected to the STBS and powered ON. Check braid1 to braid2, center1 to center2, center1 to braid2 and center2 to braid1.

3. Now running all STBs/TVs/Audio/Etc from one outlet: Check for voltages between the two coax cables at the LNBF with the other ends connected to the STBS and powered ON. Check braid1 to braid2, center1 to center2, center1 to braid2 and center2 to braid1.

4. You should also test between braid1 and the Feedhorn mount, braid2 and the feedhorn mount, center1 and the feedhorn mount and center2 and the feedhorn mount.

Do you observe voltages? AC? DC? Voltage? You should not find any voltages in excess of 500mV between any of these test points. You might observe continuity between braid1/braid2, but only if there is connection to ground. You might observe D.C. voltage between center1 and the feedhorn mount or center2 and the feedhorn mount.
 
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IntelPennny4

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well check all cables like you said and everything looks good to me. thinking about trying out another lnbf. this titanium lnb has been not right sense i got it and put it to work. strong srt l926 model number of new lnbf i may get not sure yet. if anyone wants to put there two pennys in im listening thanks
 

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FTA4PA

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Nov 13, 2013
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well check all cables like you said and everything looks good to me. thinking about trying out another lnbf. this titanium lnb has been not right sense i got it and put it to work. strong srt l926 model number of new lnbf i may get not sure yet. if anyone wants to put there two pennys in im listening thanks
Why not send the unit back to Titanium for testing (and replacement if defective) like he offered in post 25? That way you can get a definitive answer and possible save yourself the cost of buying another lnbf. ;)
 

IntelPennny4

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Oct 28, 2016
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Titanium which address you want me to send the lnbf to? street or postal? im looking at the address on your website
 

Titanium

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Both are good addresses and you may send to either. Email to support@titaniumsatellite.com and include in the package your contact (including daytime phone) and shipping information.

Could you share the answers to the previous specific testing questions? If there are potential voltages moving between feedlines, a problem may exist and it could affect any replacement.
 

IntelPennny4

Thread Starter
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Oct 28, 2016
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ok will check again on voltages and i will install new fresh line right from lnbf and double check before i ship out
 

Titanium

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I wouldn't install new lines, yet. The feedline testing should provide enough information. If the "fusible" protection link lire is broken, the LNBF won't operate. We need to figure out what "broke the fuse link" before a replacement is installed.
 

IntelPennny4

Thread Starter
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Oct 28, 2016
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ok i checked my cables again and didnt find anything wrong with them. i didnt change them to new ones. i have a single lnbf install in place of the dual and using the same lines and same stb and its working great so im sure the lines are fine.
 

Titanium

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Connecting a single LNBF will not test for voltage potential interaction between the feedlines and/or feed mount. Each coax may be fine, but a ground or voltage between common ground may exist.

Is there a reason not to provide the results of the requested testing between the two coax cables? Maybe you have performed these specific tests and we are miscommunicating?
:confused
 

IntelPennny4

Thread Starter
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Oct 28, 2016
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ok so i redid the test again. i check voltage braid to braid it was 0.326v braid to center was 14.25v center to center was 10.25v braid to center other side 14.37v

braid to feed mount 0.235v center to feed mount 14.26v other side center to feed mount 14.37v

checked ground at dish with ac voltage 0.018 then i took a extension cord over to dish one lead from meter to dish and other lead to hot side of cord and got 110v


anything else let me know
 

Titanium

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The receivers polarity set to vertical? Do both receivers use wall power adapters? Were the STBs also connected to other AV equipment (TV, cable box, audio amp, etc.)?

The voltage levels and interactions are unusual and very close to the polarity switching voltage. Combing the two receivers appears to increase the voltage. I'll see if I can replicate with similar voltage readings on my side. Will get back to you tomorrow when I am back in the shop and can test with a few STBs.

What is the voltage on each individual coax measured center to braid, measured at the dish? 13.5Vdc like you mentioned in post #28?
 

IntelPennny4

Thread Starter
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Oct 28, 2016
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yes the stb was set to vertical. yes both hooked up to same tv with all cables and cords connected. one has power adapter other one just plugs right into wall. voltage at dish if set to V its 14.2v and if set to H its 18.5v
 
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